Beam Circuit Board for Alli...
$178.99
Product details
Beam part 100639A, supplied as assembly P3, is the control board named in the title for the Alliance ECS II line, and parts retailers list this board number for Beam's Alliance 600 series power units, including the 600SAN, 600SAB, and 600SBN. It manages switching so the motor cycles on when a wall valve closes its circuit and off again once the hose disconnects, acting as the electronic link between the inlets scattered around the house and the single motor that serves all of them.
A unit that will not start, cuts the motor on and off without a pattern, or ignores a connected hose while the motor still runs fine on its own points to this board well before the motor itself, since the switching electronics fail more often than the motor. Ruling the board out first saves time and cost before assuming a bigger repair is needed, and it is usually a faster check than testing the motor directly.
Beam's Alliance lineup has changed over the years, and retailer listings tie this board to the Alliance 600 series generation, so confirm your nameplate shows an Alliance 600 series model before ordering, since the boards are not shared across generations of the same product family even when the housings look nearly identical.
A board that seats but never gets the unit running is almost always a generation mismatch rather than a defective part, which is why checking the nameplate against the title here, instead of relying on how the pieces look, is the step that prevents a wasted install and a second order.
- Part: 100639A
- Assembly: P3
- Fits: Alliance ECS II per title; Alliance 600 series (600SAN, 600SAB, 600SBN) per retailer listings
- Type: Circuit / control board
